检索结果-南通市图书馆

在线全文

学校读者我要写书评

暂无评论

表面织构电解加工技术研究进展

电加工与模具 2024年第3期 1-14,53页

作者：张庆良刘金玲孙志光曲宁松中国航空工业集团公司金城南京机电液压工程研究中心江苏南京211106 南京航空航天大学机电学院江苏南京210016

表面织构在能源、光学、电子、信息技术、生物和摩擦学等领域具有重要应用,其加工工艺是制造技术研究的重要内容。由于所加工表面织构具有无毛刺、翻边等优点,电解加工成为表面织构的重要制造技术方法和技术研究热点,故详细介绍了五种... 详细信息

表面织构在能源、光学、电子、信息技术、生物和摩擦学等领域具有重要应用,其加工工艺是制造技术研究的重要内容。由于所加工表面织构具有无毛刺、翻边等优点,电解加工成为表面织构的重要制造技术方法和技术研究热点,故详细介绍了五种典型表面织构电解加工技术在方法创新、材料去除机制、加工过程建模及加工工艺等方面的研究进展,给出了电解加工表面织构的典型结构和材料,指出提高加工效率和加工自动化程度是未来表面织构电解加工技术的发展趋势。

关键词：表面织构电解加工微细电解加工材料去除机制加工过程模型

Simulation and experimental investigation of inner-jet electrochemical grinding of GH4169 alloy

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Aeronautics 2018年第3期31卷 608-616页

作者： Hansong LI Shuxing FU qingliang zhang Shen NIU Ningsong QU College of Mechanical and Electrical Engineering Nanjing University of Aeronautics and Astronautics Nanjing 210016 China AVIC Jincheng Nanjing Engineering Institute of Aircraft Systems Nanjing 211106 China

GH4169 alloy is one of the most commonly used materials in aero engine turbine blades,but its machinability is poor because of its excellent strength at high temperatures. Electrochemical machining（ECM） has become a common method for machining this alloy and other difficult-tomachine materials. Electrochemical grinding（ECG） is a hybrid process combining ECM and conventional grinding. In this paper, investigations conducted on inner-jet ECG of GH4169 alloy are described. Two types of inner-jet ECG grinding wheels were used to machine a flat bottom *** machining process was simulated using COMSOL software, and machining gaps under different machining parameters were obtained. In addition, maximum feed rates and maximum material removal rates under different machining parameters were studied experimentally. The maximum sizes and the uniformity of the distributions of the gaps machined by the two grinding wheels were compared. The effects of different applied voltages on the machining results were also investigated.

关键词： Electrochemical grinding GH4169 alloy Inner-jet Material removal rate Maximum feed rate

在线全文

学校读者我要写书评

暂无评论

迈腾B8前照灯结构及故障诊断逻辑分析

机械工程师 2024年第9期 114-117页

作者：张庆良郭世璋李程邯郸职业技术学院河北邯郸056001

介绍了迈腾B8灯光系统的主要组成:灯具、开关、保险、接地、继电器、控制单元。进而介绍迈腾B8前大灯的组成及前照灯的灯光控制系统组成。归纳、绘制了迈腾B8的前大灯电路控制原理图,表述了相关的控制单元、用电设备、开关、继电器的关... 详细信息

介绍了迈腾B8灯光系统的主要组成:灯具、开关、保险、接地、继电器、控制单元。进而介绍迈腾B8前大灯的组成及前照灯的灯光控制系统组成。归纳、绘制了迈腾B8的前大灯电路控制原理图,表述了相关的控制单元、用电设备、开关、继电器的关联。在迈腾B8的远光电路控制原理基础上,解释了LED前大灯的工作机理及近光、远光的电流路径。基于电流形成路径,总结了故障诊断时的电压、电阻检测条件、方法与结果。

关键词：迈腾B8 发光二极管控制单元近光灯远光灯

在线全文

学校读者我要写书评

暂无评论

迈腾B8L起动系统逻辑分析

邯郸职业技术学院学报 2024年第1期37卷 29-31,36页

作者：张庆良郭世璋李程邯郸职业技术学院机电工程系河北邯郸056005

归纳迈腾B8L起动电路组成,包含起动控制电路和起动电路。起动控制电路作用主要包含:校验合法授权钥匙,转向盘解锁,各相关控制单元得电,仪表指示灯点亮。起动电路包含:受控于制动信号、P/N信号、起动控制信号的起动继电器1、起动继电器2... 详细信息

归纳迈腾B8L起动电路组成,包含起动控制电路和起动电路。起动控制电路作用主要包含:校验合法授权钥匙,转向盘解锁,各相关控制单元得电,仪表指示灯点亮。起动电路包含:受控于制动信号、P/N信号、起动控制信号的起动继电器1、起动继电器2和起动机等。制作了迈腾B8L起动原理框图,表达了上述各组成器件间的线束连接:舒适CAN、驱动CAN、以及通常的导线连接;表述了车载电网控制单元与其他控制单元间15号电的路径。基于原理框图,给出迈腾B8L的起动逻辑关系,为进一步的故障诊断与排除给出思路,指出诊断方向。

关键词：迈腾B8 控制单元信号舒适系统驱动系统

在线全文

学校读者我要写书评

暂无评论

邯郸市新能源汽车产业发展现状与建议

邯郸职业技术学院学报 2024年第2期37卷 32-34,53页

作者：张庆良高志贤陈建华邯郸职业技术学院机电工程系河北邯郸056005

归纳了我国机动车保有量对环境的影响,指出我国对外资源依存度的提升以及在燃油车上的短板,进而总结了我国发展新能源汽车的客观需求。整理了2022年主流公司的新能源汽车销量,梳理了我国在新能源汽车上的成就。调研了邯郸市新能源汽车... 详细信息

归纳了我国机动车保有量对环境的影响,指出我国对外资源依存度的提升以及在燃油车上的短板,进而总结了我国发展新能源汽车的客观需求。整理了2022年主流公司的新能源汽车销量,梳理了我国在新能源汽车上的成就。调研了邯郸市新能源汽车产业现状,包含新能源汽车整车制造、其他规模较大的汽车相关公司状况。在邯郸的钢铁、煤炭重工业基础现状上,建议考虑发展商用车整车制造、汽车辅助和配套产业,开发新能源。

关键词：新能源汽车产业发展建议邯郸市

基于理化性质和代谢组学的西南地区常规酿酒高粱与杂交高粱鉴别分析

在线全文

学校读者我要写书评

暂无评论

食品工业科技 2024年第19期45卷 256-267页

作者：王红梅李哲王松涛张庆良陈安静李令涂荣坤泸州品创科技有限公司(国家固态酿造工程技术研究中心) 四川泸州646000 泸州老窖股份有限公司四川泸州646000 泸州红高粱现代农业开发有限公司四川泸州646000

为分析杂交高粱与西南地区常规酿酒高粱成分的差异,建立品种判别方法。本文测定了29个高粱样品的基本理化组分,采用超高效液相色谱-复合四极杆轨道阱质谱法(ultra high performance liquid chromatography coupled with Q Exactive HF-X... 详细信息

为分析杂交高粱与西南地区常规酿酒高粱成分的差异,建立品种判别方法。本文测定了29个高粱样品的基本理化组分,采用超高效液相色谱-复合四极杆轨道阱质谱法(ultra high performance liquid chromatography coupled with Q Exactive HF-X mass spectrometry,UHPLC-Q Exactive HF-X-MS)分析不同品种类别高粱的代谢物组成,通过主成分分析(principal component analysis,PCA)、正交偏最小二乘判别分析(orthogonal partial least squares discriminant analysis,OPLS-DA)模型、聚类分析和受试者工作特征(receiver operating characteristic,ROC)曲线分析等统计学方法对理化组分和所有代谢物进行特征成分筛选和品种鉴别模型构建。结果表明西南地区常规品种的支链淀粉和单宁含量比杂交品种高,直链淀粉含量和千粒重偏低,基于理化性质可实现部分样品的鉴别。以全部1048个代谢物为变量构建OPLS-DA模型,筛选出46种主要差异代谢物,重新构建了高粱品种OPLS-DA判别模型,判别准确率达到100%。西南地区常规品种中多种酚类化合物含量相对较高。另外,基于ROC分析和质控样本(quality control sample,QC)的相对标准偏差(relative standard deviation,RSD)进一步筛选出20个诊断准确性较高且重现性较好的差异代谢物。其中丁香亭-3-葡萄糖苷和6″-O-乙酰大豆苷在常规高粱品种中具有更高的表达丰度,D-葡萄糖酸、腐胺、N-乙酰腐胺和L-谷氨酰胺在杂交高粱中含量更高。本研究揭示了西南地区常规酿酒高粱与杂交高粱的差异性,建立的基于UHPLC-Q Exactive HF-X-MS的非靶向代谢组学方法能科学准确地用于高粱品种鉴别,为高粱品种鉴别提供一种新策略。

关键词：西南地区酿酒高粱常规品种非靶向代谢组学鉴别

维普期刊数据库博看期刊

同方期刊数据库

Design and tailoring of patterned ZnO nanostructures for perovskite light absorption modulation

在线全文

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2024年第5期31卷 855-861页

作者： Haonan Si Xuan Zhao qingliang Liao Yue zhang Academy for Advanced Interdisciplinary Science and Technology Beijing Advanced Innovation Center for Materials Genome EngineeringUniversity of Science and Technology BeijingBeijing 100083China Key Laboratory of Advanced Materials and Devices for Post-Moore Chips Ministry of EducationBeijing Key Laboratory for Advanced Energy Materials and TechnologiesSchool of Materials Science and EngineeringUniversity of Science and Technology BeijingBeijing 100083China

Lithography is a pivotal micro/nanomanufacturing technique,facilitating performance enhancements in an extensive array of devices,encompassing sensors,transistors,and photovoltaic *** key to creating highly precise,multiscale-distributed patterned structures is the precise control of the lithography ***,high-quality patterned ZnO nanostructures are constructed by systematically tuning the exposure and development times during *** optimizing these parameters,ZnO nanorod arrays with line/hole arrangements are successfully *** ZnO nanostructures with highly controllable morphology and structure possess discrete three-dimensional space structure,enlarged surface area,and improved light capture ability,which achieve highly efficient energy conversion in perovskite solar *** lithography process management for these patterned ZnO nanostructures provides important guidance for the design and construction of complex nanostructures and devices with excellent performance.

关键词： lithography patterned ZnO nanorod arrays light absorption perovskite solar cell

Effects of Plasma Nitriding on Microstructure and Tribological Properties of CoCrMo Alloy Implant Materials

在线全文

学校读者我要写书评

暂无评论

Journal of Bionic Engineering 2010年第4期7卷 337-344页

作者： qingliang Wang,Lei zhang,Jiandong Dong School of Material Science and Engineering,China University of Mining & Technology,Xuzhou 221116,P.R.China School of Material Science and Engineering China University of Mining & Technology Xuzhou P. R. China

Medical forged CoCrMo alloy was treated by plasma nitriding *** microstructures were characterized by 3Dprofiler,SEM and *** tribological properties were investigated under lubrication of 25% bovine serum *** that plasma nitriding is a promising process to produce thick,hard,and more wear resistant layers on the surface of *** nitrided samples showed an important increase in the surface hardness due to the formation of harder CrN andCrN phases with compact nano-crystalline *** typical hardness values of HVincreased almost two times thanuntreated *** bovine serum lubrication,at low nitriding temperature the Coefficient of Friction (COF) of nitrided samplewas lower than that of untreated sample,but at high nitriding temperature the COF was almost the same as the untreated *** with the untreated sample,the nitrided samples showed lower wear rates and higher wear resistance under differentnitriding *** adhesive wear is the main mechanism for untreated CoCrMo alloy and the wear mechanisms ofnitrided ones are the fatigue wear and slight adhesive *** is concluded that the improvement of wear resistance is ascribed tothe hard nitride formation of CrN and CrN phases at the nitrided surfaces.

关键词： CoCrMo alloy plasma nitriding microstructure friction and wear

All‑Covalent Organic Framework Nanofilms Assembled Lithium‑Ion Capacitor to Solve the Imbalanced Charge Storage Kinetics

在线全文

学校读者我要写书评

暂无评论

Nano-Micro Letters 2024年第6期16卷 246-260页

作者： Xiaoyang Xu Jia zhang Zihao zhang Guandan Lu Wei Cao Ning Wang Yunmeng Xia qingliang Feng Shanlin Qiao College of Chemistry and Pharmaceutical Engineering Hebei University of Science and TechnologyShijiazhuang 050018People’s Republic of China School of Chemistry and Chemical Engineering Northwestern Polytechnical UniversityXi’an 710072People’s Republic of China Hebei Engineering Research Center of Organic Solid Photoelectric Materials for Electronic Information Shijiazhuang 050018People’s Republic of China

Free-standing covalent organic framework(COFs)nanofilms exhibit a remarkable ability to rapidly intercalate/de-intercalate Li^(+) in lithium-ion batteries,while simultaneously exposing affluent active sites in *** development of these nanofilms offers a promising solution to address the persistent challenge of imbalanced charge storage kinetics between battery-type anode and capacitor-type cathode in lithium-ion capacitors(LICs).Herein,for the first time,custom-made COFBTMB-TP and COFTAPB-BPY nanofilms are synthesized as the anode and cathode,respectively,for an all-COF nanofilm-structured *** COFBTMB-TP nanofilm with strong electronegative–CF3 groups enables tuning the partial electron cloud density for Li^(+) migration to ensure the rapid anode kinetic *** thickness-regulated cathodic COFTAPB-BPY nanofilm can fit the anodic COF nanofilm in the *** to the aligned 1D channel,2D aromatic skeleton and accessible active sites of COF nanofilms,the whole COFTAPB-BPY//COFBTMB-TP LIC demonstrates a high energy density of 318 mWh cm^(−3) at a high-power density of 6 W cm^(−3),excellent rate capability,good cycle stability with the capacity retention rate of 77%after *** COFTAPB-BPY//COFBTMB-TP LIC represents a new benchmark for currently reported film-type LICs and even film-type *** being comprehensively explored via ex situ XPS,7Li solid-state NMR analyses,and DFT calculation,it is found that the COFBTMB-TP nanofilm facilitates the reversible conversion of semi-ionic to ionic C–F bonds during lithium ***-TP exhibits a strong interaction with Li^(+) due to the C–F,C=O,and C–N bonds,facilitating Li^(+) desolation and absorption from the *** work addresses the challenge of imbalanced charge storage kinetics and capacity between the anode and cathode and also pave the way for future miniaturized and wearable LIC devices.

关键词： Covalent organic frameworks Lithium-ion capacitor Charge storage kinetic